Final answer:
Ulcerative colitis is an inflammatory bowel disease that primarily affects the colon and rectum. Unique findings that can help diagnose ulcerative colitis include lower abdominal pain, bloody diarrhea, and the presence of ulcers in the colon and rectum.
Step-by-step explanation:
Ulcerative colitis is an inflammatory bowel disease that primarily affects the colon and rectum. Unlike Crohn's disease, other parts of the GI tract are rarely affected. Some unique findings that can help diagnose ulcerative colitis include lower abdominal pain, bloody diarrhea, and the presence of ulcers in the colon and rectum as seen during a colonoscopy and tissue biopsies.